sys/arch/arm/mainbus/mainbus.c

   1 /* $NetBSD: mainbus.c,v 1.15 2009/03/14 14:45:56 dsl Exp $ */
   2
   3 /*
   4  * Copyright (c) 1994,1995 Mark Brinicombe.
   5  * Copyright (c) 1994 Brini.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by Brini.
  19  * 4. The name of the company nor the name of the author may be used to
  20  *    endorse or promote products derived from this software without specific
  21  *    prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
  24  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * RiscBSD kernel project
  36  *
  37  * mainbus.c
  38  *
  39  * mainbus configuration
  40  *
  41  * Created      : 15/12/94
  42  */
  43
  44 #include <sys/cdefs.h>
  45 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.15 2009/03/14 14:45:56 dsl Exp $");
  46
  47 #include <sys/param.h>
  48 #include <sys/systm.h>
  49 #include <sys/kernel.h>
  50 #include <sys/conf.h>
  51 #include <sys/malloc.h>
  52 #include <sys/device.h>
  53
  54 #if defined(arm32)              /* XXX */
  55 #include <machine/io.h>
  56 #endif
  57 #include <machine/bus.h>
  58 #include <arm/mainbus/mainbus.h>
  59 #include "locators.h"
  60
  61 /*
  62  * mainbus is a root device so we a bus space tag to pass to children
  63  *
  64  * The tag is provided by mainbus_io.c and mainbus_io_asm.S
  65  */
  66
  67 extern struct bus_space mainbus_bs_tag;
  68
  69 /* Prototypes for functions provided */
  70
  71 static int  mainbusmatch(struct device *, struct cfdata *, void *);
  72 static void mainbusattach(struct device *, struct device *, void *);
  73 static int  mainbusprint(void *aux, const char *mainbus);
  74 static int  mainbussearch(struct device *, struct cfdata *,
  75                                 const int *, void *);
  76
  77 /* attach and device structures for the device */
  78
  79 CFATTACH_DECL(mainbus, sizeof(struct device),
  80     mainbusmatch, mainbusattach, NULL, NULL);
  81
  82 /*
  83  * int mainbusmatch(struct device *parent, struct cfdata *cf, void *aux)
  84  *
  85  * Always match for unit 0
  86  */
  87
  88 static int
  89 mainbusmatch(struct device *parent, struct cfdata *cf, void *aux)
  90 {
  91         return (1);
  92 }
  93
  94 /*
  95  * int mainbusprint(void *aux, const char *mainbus)
  96  *
  97  * print routine used during config of children
  98  */
  99
 100 static int
 101 mainbusprint(void *aux, const char *mainbus)
 102 {
 103         struct mainbus_attach_args *mb = aux;
 104
 105         if (mb->mb_iobase != MAINBUSCF_BASE_DEFAULT)
 106                 aprint_normal(" base 0x%x", mb->mb_iobase);
 107         if (mb->mb_iosize > 1)
 108                 aprint_normal("-0x%x", mb->mb_iobase + mb->mb_iosize - 1);
 109         if (mb->mb_irq != -1)
 110                 aprint_normal(" irq %d", mb->mb_irq);
 111         if (mb->mb_drq != -1)
 112                 aprint_normal(" drq 0x%08x", mb->mb_drq);
 113
 114 /* XXXX print flags */
 115         return (QUIET);
 116 }
 117
 118 /*
 119  * int mainbussearch(struct device *parent, struct device *self, void *aux)
 120  *
 121  * search routine used during the config of children
 122  */
 123
 124 static int
 125 mainbussearch(struct device *parent, struct cfdata *cf, const int *ldesc, void *aux)
 126 {
 127         struct mainbus_attach_args mb;
 128         int tryagain;
 129
 130         do {
 131                 if (cf->cf_loc[MAINBUSCF_BASE] == MAINBUSCF_BASE_DEFAULT) {
 132                         mb.mb_iobase = MAINBUSCF_BASE_DEFAULT;
 133                         mb.mb_iosize = 0;
 134                         mb.mb_drq = MAINBUSCF_DACK_DEFAULT;
 135                         mb.mb_irq = MAINBUSCF_IRQ_DEFAULT;
 136                 } else {
 137                         mb.mb_iobase = cf->cf_loc[MAINBUSCF_BASE];
 138 #if defined(arm32) && !defined(EB7500ATX)
 139                         mb.mb_iobase += IO_CONF_BASE;
 140 #endif
 141                         mb.mb_iosize = cf->cf_loc[MAINBUSCF_SIZE];
 142                         mb.mb_drq = cf->cf_loc[MAINBUSCF_DACK];
 143                         mb.mb_irq = cf->cf_loc[MAINBUSCF_IRQ];
 144                 }
 145                 mb.mb_iot = &mainbus_bs_tag;
 146
 147                 tryagain = 0;
 148                 if (config_match(parent, cf, &mb) > 0) {
 149                         config_attach(parent, cf, &mb, mainbusprint);
 150 /*                      tryagain = (cf->cf_fstate == FSTATE_STAR);*/
 151                 }
 152         } while (tryagain);
 153
 154         return (0);
 155 }
 156
 157 /*
 158  * void mainbusattach(struct device *parent, struct device *self, void *aux)
 159  *
 160  * probe and attach all children
 161  */
 162
 163 static void
 164 mainbusattach(struct device *parent, struct device *self, void *aux)
 165 {
 166         aprint_naive("\n");
 167         aprint_normal("\n");
 168
 169         config_search_ia(mainbussearch, self, "mainbus", NULL);
 170 }
 171
 172 /* End of mainbus.c */